Method and system for measuring flow field information and sediment transport characteristics of inclined-tube-type sedimentation basin

Abstract

The invention provides a method and system for measuring flow field information and sediment transport characteristics of an inclined-tube-type sedimentation basin. The method comprises the steps of collecting single-point three-dimensional instantaneous flow rates and single-point turbidity information of a plurality of measuring points in the target inclined-tube-type sedimentation basin and information of the vertical distance from all the measuring points to the sediment surface of the basin bottom separately; based on the single-point three-dimensional instantaneous flow rates, calculating the flow field information of two-phase flow of all the measuring points in three corresponding dimension directions separately; based on the single-point turbidity information and the vertical distance information, calculating the sediment transport characteristics in the target inclined-tube-type sedimentation basin, wherein all the measuring points are selected from a plurality of measurementsections arranged in the target inclined-tube-type sedimentation basin in the three corresponding dimension directions separately. By means of the method, the flow field information and sediment transport characteristics of the complete water-sediment two-phase flow of the inclined-tube-type sedimentation basin can be effectively measured, and therefore a more reliable technical basis is providedfor further optimization of the structural form of the inclined-tube-type sedimentation basin.

Description

technical field [0001] The invention relates to the technical field of information detection and processing, and more specifically, to a method and system for measuring flow field information and sediment transport characteristics of an inclined tube type desilting tank. Background technique [0002] The inclined tube desilting tank is widely used in small and medium-sized water plants, micro-sprinkler irrigation and other systems due to its unique advantages of small footprint and high desilting efficiency. However, due to the complex structure of the inclined tube type grit chamber, it is impossible to observe the water-sediment two-phase flow field and sediment transport characteristics in the tank under different design structural parameters, which seriously affects the relevant researchers' understanding of the inclined tube type grit chamber structure. Further optimization of the type. [0003] At present, in terms of flow velocity measurement, the most commonly used ...

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Problems solved by technology

However, this method can only measure the flow velocity of multiple measurement points on a fixed section, and it is also unable to measure the flow direction information of the measurement points and the sediment deposition data at the bottom of the flow field, so that a complete water-sediment two-phase flow field cannot be obtained. and sediment transport information, and thus cannot provide a reliable basis for the further optimization of the structure type of the inclined tube grit chamber

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